0
We're unable to sign you in at this time. Please try again in a few minutes.
Retry
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
Retry
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
ARTICLE |

MALIGNANT TUMORS OF THE THYMUS

FRANK HELVESTINE JR., M.D.
Arch Surg. 1924;9(2):309-316. doi:10.1001/archsurg.1924.01120080075006.
Text Size: A A A
Published online

The mediastinum contains a number of important structures which bear a close relationship to each other in this confined space. A tumor of the mediastinum, whether benign or malignant, is a serious matter. Comparatively small benign tumors may cause very severe symptoms. Malignant tumors of thymic origin, although uncommon, occur frequently enough to be of clinical importance.

Thymic neoplasms are difficult to interpret and to classify. The histogenesis of the thymus, especially the origin of the small lymphoid cells, which compose the larger part of the organ, is not clear. The work of Hammar1 and Maximow,2 however, seems to demonstrate that these cells are true lymphocytes. This conclusion is confirmed by the more recent work of Badertscher.3 According to certain investigators (Stöhr,4 and Papenheimer5) the lymphoid cells are epithelial in origin. It is generally agreed that the cells which form the corpuscles of Hassall are

Topics

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

First Page Preview

View Large
/>
First page PDF preview

Figures

Tables

References

Correspondence

CME
Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Comment

Multimedia

Some tools below are only available to our subscribers or users with an online account.

Sign in

Create a free personal account to sign up for alerts, share articles, and more.

Purchase Options

• Buy this article
• Subscribe to the journal

Related Content

Customize your page view by dragging & repositioning the boxes below.

Jobs
brightcove.createExperiences();